Bench snippet for Array.map

bench/snippets/array-map.mjs

@@ -0,0 +1,54 @@
+// https://github.com/oven-sh/bun/issues/1096
+import { bench, run } from "mitata";
+
+for (let i = 0; i < 20; i++) {
+  var array = new Array(i);
+  for (let j = 0; j < i; j++) {
+    array[j] = 1;
+  }
+
+  bench("Array.map x " + i, () => array.map(identity));
+}
+
+bench("inline Array.map x 0", () => [].map(identity));
+bench("inline Array.map x 1", () => [1].map(identity));
+bench("inline Array.map x 2", () => [1, 1].map(identity));
+bench("inline Array.map x 3", () => [1, 1, 1].map(identity));
+bench("inline Array.map x 4", () => [1, 1, 1, 1].map(identity));
+bench("inline Array.map x 5", () => [1, 1, 1, 1, 1].map(identity));
+bench("inline Array.map x 6", () => [1, 1, 1, 1, 1, 1].map(identity));
+bench("inline Array.map x 7", () => [1, 1, 1, 1, 1, 1, 1].map(identity));
+bench("inline Array.map x 8", () => [1, 1, 1, 1, 1, 1, 1, 1].map(identity));
+bench("inline Array.map x 9", () => [1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity));
+bench("inline Array.map x 10", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 11", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 12", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 13", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 14", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 15", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 16", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 17", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 18", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+bench("inline Array.map x 19", () =>
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1].map(identity)
+);
+
+await run();